U.S. patent application number 12/657033 was filed with the patent office on 2010-09-23 for personal protection device.
Invention is credited to Alan Kaufman.
Application Number | 20100237098 12/657033 |
Document ID | / |
Family ID | 42736627 |
Filed Date | 2010-09-23 |
United States Patent
Application |
20100237098 |
Kind Code |
A1 |
Kaufman; Alan |
September 23, 2010 |
Personal protection device
Abstract
A pocket-sized self-defense spray device is capable of
dispensing a chemical irritant to cause temporary breathing
difficulty and a burning sensation in the eyes of the target
without any permanent damage. The device comprises a casing, a
nozzle, and a multi-position trigger. The trigger is slidably
mounted in the casing to be moveable from a safe position to an
active position. The casing may contain a battery-powered light
that is switched on to illuminate the target when the trigger is in
the active position. The trigger button in the second position may
then be depressed into an engaged position that causes chemical
irritant to be discharged from a removable canister with a poppet
valve into a nozzle chamber, and out the nozzle exit at a target.
The casing includes an ergonomic finger grip that serves to prevent
inadvertent discharge at the user, and ease of aiming at the
target.
Inventors: |
Kaufman; Alan; (New York,
NY) |
Correspondence
Address: |
Thomas A. O'Rourke;Bodner & O'Rourke, LLP
Suite 120, 425 Broadhollow Road
Melville
NY
11747
US
|
Family ID: |
42736627 |
Appl. No.: |
12/657033 |
Filed: |
January 12, 2010 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61204927 |
Jan 13, 2009 |
|
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Current U.S.
Class: |
222/113 ;
222/183; 222/192; 222/402.1; 362/157; 362/96 |
Current CPC
Class: |
B65D 83/22 20130101;
B65D 83/206 20130101; F21V 33/0076 20130101; F41H 9/10
20130101 |
Class at
Publication: |
222/113 ;
222/402.1; 362/96; 362/157; 222/192; 222/183 |
International
Class: |
B65D 5/66 20060101
B65D005/66; B65D 83/16 20060101 B65D083/16; F21V 33/00 20060101
F21V033/00; F21L 4/00 20060101 F21L004/00; B67D 7/06 20060101
B67D007/06; B67D 1/07 20060101 B67D001/07 |
Claims
1. A personal protection device comprising a casing, a nozzle
assembly, a light source coupled to a battery, and a trigger
member; said casing supporting said light, said battery, and said
trigger; said trigger member being mounted to said casing to be
moveable from a first position to a second position; said trigger
member switching on said light when moved from said first position
into said second position; said trigger member when in said second
position being moveable from said second position to a third
position, said trigger member being biased to move back into said
second position from said third position; said movement of said
trigger member into said third position causing said nozzle
assembly to engage a pressurized source of chemical irritant, said
engagement resulting in discharge of said chemical irritant out
from said nozzle assembly.
2. The personal protection device of claim 1 wherein said movement
of said trigger button between said first position and said second
position comprises motion of a type being one or more of:
translational movement and pivotal movement.
3. The personal protection device of claim 2 wherein said movement
of said trigger button between said second position and said third
position comprises motion of a type being one or more of
translational movement and pivotal movement.
4. The personal protection device of claim 3 wherein said trigger
button is biased to be in said first position, said biasing into
said first position occurring until said trigger button is moved at
least part of the way to said second position where said trigger
button is then biased to be in said second position.
5. The personal protection device of claim 4 wherein said casing
comprises a head portion and a graspable portion, said graspable
portion extending from said head portion.
6. The personal protection device of claim 5 wherein said graspable
portion of said casing is generally tubular.
7. The personal protection device of claim 6 wherein said graspable
portion of said casing further comprises an ergonomic finger grip,
said ergonomic finger grip assisting in preventing inadvertent
discharge at the user; and wherein said ergonomic finger grip
assists in aiming said discharge at a target.
8. The personal protection device of claim 7 wherein said ergonomic
finger grip comprises contouring for finger separation.
9. The personal protection device of claim 8 wherein said casing
comprises a cylindrical shield, said cylindrical shield preventing
errant lateral discharge of said chemical irritant.
10. The personal protection device of claim 9 wherein said
pressurized source comprises a canister with a poppet valve; said
canister being received by said tubular casing such that pivotal
movement of said trigger button to said third position activates
said poppet valve to cause discharge of chemical irritant into said
nozzle assembly.
11. The personal protection device of claim 10 wherein said
chemical comprises an aerosol formula, said aerosol formula
comprising a liquid concentrate and a propellant.
12. The personal protection device of claim 11 wherein said
propellant is a gas, and said liquid concentrate comprises a active
ingredient, said active ingredient comprising oleoresin
capsicum.
13. The personal protection device of claim 12 wherein said
chemical irritant causes temporary effects comprising one or more
of the following: burning sensation in eyes of said target, pain,
and difficulty breathing.
14. The personal protection device of claim 13 wherein said nozzle
assembly deflects said outward discharge of chemical irritant to be
an angle to said discharge from said canister poppet valve.
15. The personal protection device of claim 14 wherein said
deflection angle is approximately 90 degrees.
16. The personal protection device of claim 15 wherein said
canister is removably retained in said tubular casing with a
latch.
17. The personal protection device of claim 16 wherein said casing
in formed with a first part and a second part, said first and
second part being adapted to receive fasteners to connect said
first part to said second part, and wherein said fasteners are from
the group consisting of screws, or nuts and bolts.
18. The personal protection device of claim 17 wherein said biasing
of said trigger button between said first position and said second
position is by a spring, said spring being from the group
consisting of a torsion spring; and a coil spring.
19. The personal protection device of claim 18 wherein said pivotal
biasing of said trigger button from said third position into said
second position is by a spring, said spring being from the group
consisting of a leaf spring; a torsion spring; and a coil
spring.
20. The personal protection device of claim 19 wherein said light
is an LED, said LED projecting a focused light beam that is
calibrated for alignment with said discharge from said nozzle to
assist in aiming said discharge.
21. The personal protection device of claim 20 wherein said
discharge from said nozzle assembly is capable of being accurately
projected in the range of approximately 8 feet to 12 feet.
22. The personal protection device of claim 21 wherein said casing
comprises a post to accommodate attachment of a lanyard with a
key-ring.
23. A chemical irritant dispenser comprising a housing with a
cavity, said cavity accommodating a nozzle and a trigger switch;
said nozzle being moveably mounted within said housing; said
trigger switch having a surface protruding out from a first opening
in said housing; said trigger switch being moveably mounted within
said housing and moveable from a safety position to an active
position, said trigger switch in said active position being capable
of being depressed into an engaged position that causes movement of
said nozzle; one end of said nozzle being connected to a source of
chemical irritant; and wherein said sliding movement of said nozzle
with said trigger switch in said engaged position causes release of
chemical irritant from said source into said nozzle and out of a
second end of said nozzle.
24. The personal protection device of claim 23 wherein said nozzle
is slidably mounted within said housing.
25. The personal protection device of claim 24 wherein said device
further comprises a light source, said light being switchable on
and off using said trigger switch.
26. The personal protection device of claim 25 wherein said trigger
switch is moved into said active position to turn on said
light.
27. The personal protection device of claim 23 wherein said trigger
switch maybe depressed while in said safety position to turn on
said light.
28. A personal protection device comprising a casing, a nozzle
assembly, a light source coupled to a battery, and a trigger
member; said light being switchable between an illuminated and a
non-illuminated condition; said casing supporting said light, said
battery, and said trigger; said trigger member being mounted to
said casing to be moveable between at least two positions; and
wherein movement of said trigger member between one of said at
least two positions to another of said at least two positions
causes said nozzle assembly to engage a pressurized source of
chemical irritant, said engagement resulting in discharge of said
chemical irritant out from said nozzle assembly; said trigger
member being biased to move back from said engaged position to said
one of said at least two positions.
29. The personal protection device of claim 28 wherein said device
comprises a dedicated switch to cause illumination of said light
source.
30. The personal protection device of claim 28 wherein said at
least two positions of said trigger member includes movement to a
position that causes illumination of said light.
31. The personal protection device of claim 30 wherein said
position that causes illumination of said light comprises a third
position of said trigger member.
33. The personal protection device of claim 31 wherein said light
source comprises and LED.
Description
[0001] This application claims priority on U.S. Provisional
Application Ser. No. 61/204,927 filed on Jan. 13, 2009, the
disclosures of which are incorporated herein by reference.
FIELD OF THE INVENTION
[0002] The present invention relates generally to personal chemical
irritant dispensers, and specifically directed towards personal
chemical irritant dispensers which are compact, and must be quick
and easy to operate.
SUMMARY OF THE INVENTION
[0003] The present invention is meant to be used by the general
public for personal protection. The dispenser itself is designed to
fit naturally in either hand of the user in the vertical position,
with the spout pointing away from the user. In the preferred
embodiment, the user closes their fingers around the lower body the
dispenser, and their thumb is placed naturally on the trigger
button on the rear end of the head. The user then pushes forward on
the trigger button to engage the flashlight assembly on the front
end of the head and then pushes down on the trigger button to
engage the nozzle assembly and spray the chemical irritant.
[0004] The present invention provides an ergonomically shaped
dispenser that makes it difficult for a user to not properly aim
the dispenser. One of the problems with prior designs is that there
was a risk that a user could inadvertently discharge the chemical
irritant toward the user and not toward the assailant. The present
invention with its unique trigger design as well as the
configuration of the nozzle area reduces, if not eliminates, that
risk.
[0005] The present invention has a discharge head and an ergonomic
grip. The discharge head has a front portion and a rear portion.
The front portion is provided with a nozzle with a circular shield
for discharging liquid irritant. Extending from the front portion
to the rear portion there is a top surface with an activating means
thereon. This activating means permits fluid in the device to be
discharged as desired. The location of the activating means on the
top surface of the discharge head facilitates the use of a user's
thumb to activate the device.
[0006] Extending downwardly from the bottom of the discharge head
is an ergonomically designed grip for holding the device in a
user's hand. The grip is contoured to facilitate holding the grip
so that the discharge nozzle is pointed away from the user. To this
end, the grip has a pair of recessed portions on a front face of
the device so that the user's fingers can go around the grip. The
rear of the handle is relatively smooth so that the device sits
comfortably in the palm of a user's hand. The smooth portion is a
can of chemical irritant positioned in the device.
OBJECTS OF THE INVENTION
[0007] It is an object of the invention to provide a self defense
spray device.
[0008] It is another object of the invention to provide a
dispensing device that discharges a chemical which produces
disabling effects in an assailant.
[0009] It is a further object of the invention to provide a
dispensing device which does not cause any permanent harm to an
assailant who has been subjected to the device's chemical
discharge.
[0010] It is another object of the invention to provide a
dispensing device which may be stored in a user's pocket.
[0011] It is also an object of the invention to provide a device
which may form part of a key ring to aid in ease of finding the
device.
[0012] It is another object of the invention to provide a
dispensing device which may prevent inadvertent discharge at the
user.
[0013] It is also an object of the invention to provide a device
which has a readily recognizable grip to alert the user to the
proper orientation to aim the device while still in the user's
pocket.
[0014] It is another object of the invention to provide a
dispensing device which may have a light emitting diode to
illuminate the assailant and provide a means of properly aiming a
discharge.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] FIG. 1 is a front view of a first embodiment of the chemical
irritant dispenser of the present invention.
[0016] FIG. 2 is a side view of the dispenser of FIG. 1.
[0017] FIG. 3 is a rear view of the dispenser of FIG. 1.
[0018] FIG. 4 is a rear perspective view of the dispenser of FIG.
1.
[0019] FIG. 5 is a front perspective view of the dispenser of FIG.
1.
[0020] FIG. 6 is a top view of the dispenser of FIG. 1.
[0021] FIG. 7 is a bottom view of the dispenser of FIG. 1.
[0022] FIG. 8 is a view of the bottom of the graspable portion of
the casing, shown with a lanyard attached to a post.
[0023] FIG. 8A is a cut-away view of the bottom of the graspable
portion of the casing, shown with a lanyard attached to a post.
[0024] FIG. 8B is a perspective view of the bottom of the graspable
portion of the casing, shown with a lanyard attached to a post.
[0025] FIG. 9 is a cut-away view of FIG. 8A enlarged to show the
latch feature used to retain the canister of chemical irritant
within the casing.
[0026] FIGS. 10-14 are a composite arrangement on a single sheet of
FIGS. 1-3 and FIGS. 6-7.
[0027] FIG. 15 is a section view of the first embodiment of the
chemical irritant dispenser of the present invention.
[0028] FIG. 16 is an enlarged section view of the head portion of
the chemical irritant dispenser of FIG. 15.
[0029] FIG. 16A is a section view of the nozzle housing.
[0030] FIG. 16B is a section view of the nozzle flow-adjuster
insert.
[0031] FIG. 17 is a front view of a second embodiment of the
chemical irritant dispenser of the present invention.
[0032] FIG. 18 is a left side view of the dispenser of FIG. 17.
[0033] FIG. 19 is a rear view of the dispenser of FIG. 17.
[0034] FIG. 20 is a right side view of the dispenser of FIG.
17.
[0035] FIG. 21 is a top view of the dispenser of FIG. 17.
[0036] FIG. 22 is a bottom view of the dispenser of FIG. 17.
[0037] FIG. 23 is an exploded view of some of the parts comprising
the dispenser of FIG. 17.
[0038] FIG. 24 is vertical cross-sectional view of the dispenser of
FIG. 17, taken at the center of the nozzle outlet, with the trigger
button in the "safe" position.
[0039] FIG. 25 is vertical cross-sectional view of the dispenser of
FIG. 17, taken at the center of the nozzle outlet mid-plane, with
the trigger button in the "active" or "ready" position.
[0040] FIG. 26 is a horizontal cross-sectional view of the
dispenser of FIG. 17, taken at the center of the nozzle outlet.
[0041] FIG. 27 is a perspective cross-sectional view of the
dispenser of FIG. 17, taken horizontally at the center of the
nozzle outlet.
[0042] FIG. 28 is vertical cross-sectional view of the dispenser of
FIG. 17, taken at the center of the nozzle outlet and oriented
orthogonal to the nozzle outlet centerline.
[0043] FIG. 29 is a side view of a third embodiment of the chemical
irritant dispenser of the present invention.
[0044] FIG. 30 is a cross-sectional view of the dispenser of FIG.
29.
[0045] FIG. 31 is a rear view of the dispenser of FIG. 29.
[0046] FIG. 32 is a top view of the dispenser of FIG. 29.
[0047] FIG. 33 is an exploded view of a fourth embodiment of the
chemical irritant dispenser of the present invention.
[0048] FIG. 34 is an exploded view of the fourth embodiment of the
chemical irritant dispenser of the present invention.
[0049] FIG. 35 is a section view of the left side of the fourth
embodiment of the chemical irritant dispenser of the present
invention, without the canister installed therein.
[0050] FIG. 36 is a section view of the right side of the fourth
embodiment of the chemical irritant dispenser of the present
invention, without the canister installed therein.
[0051] FIG. 37 is a side view of the canister.
DETAILED DESCRIPTION OF THE INVENTION
[0052] The overall shape of the pocket pistol or chemical irritant
dispenser is cylindrical, which allows it to fit comfortably and
naturally in the user's hand. In a first embodiment, the dispenser
1 may principally be comprised of a casing 10, a nozzle assembly
50, a battery-powered light 80, a trigger button 70, and an aerosol
canister 90.
[0053] As seen in FIG. 2, the casing 10 may essential be a housing
with a cavity and comprise a graspable handle portion 12, and a
head portion 34. The casing 10 may be formed in any suitable manner
and material, including, but not limited to, molded plastic or a
metal casting. Molded plastic may be preferable in order to provide
a very light-weight casing 10. The graspable handle portion 12 of
casing 10 may form a generally full tubular shape, but the addition
of distinctive features about the tubular shape creates a front
side 13, a rear side 14, and a base 15. The rear side 14 may have
an opening which leaves a portion of the aerosol canister 90
exposed. The opening may serve to reduce the overall effective
diameter which the user must grasp, so that the graspable handle
portion 12 may fit easily and comfortably within the palm and
fingers of most users. Additionally, having a portion of the
canister 90 exposed may serve to enable its quick and easy removal
from within the casing 10.
[0054] The generally tubular shape of casing 10 may also be
interrupted on the front side 13 by ergonomic contouring which
allows the user to grip the dispenser 1 naturally and securely. The
grip may be contoured to facilitate the user holding the graspable
handle portion 12 so that the discharge from nozzle assembly 50 is
pointed away from the user. The contoured grip allows the user, in
the absence of any visual cues, to reach into his or her pocket and
quickly acquire a tactile feel as to the proper orientation
necessary to hold and properly aim the dispenser 1, and thus may
prevent the user from accidentally spraying themselves rather than
an assailant. To offer an easily acquired tactile feel, the front
side 13 by may have a central peak 17 and a base peak 18 which
create two distinct finger gripping regions--an upper finger grip
region 19 and a lower finger grip region 20.
[0055] The central peak 17 may preferably be located to produce an
upper finger grip region 19 that comfortably accommodates the
user's pointer finger, while the lower finger grip region 20
comfortably accommodates the user's middle, index and pinky
fingers. Other finger gripping arrangements are also possible. Both
the upper and lower finger gripping regions 19 and 20 may each have
one or more arcuate indentations that run horizontally along the
front side 13, and which aide the user in attaining a fast and
secure grip. Instead of the arcuate indentations 21, narrow rubber
strips (not shown) may also assist in providing a secure and
readily recognizable contact surface.
[0056] The casing 10 may preferably be manufactured in two pieces
(FIG. 23)--a left casing half 10L and a right casing half 10R--to
assist in assembling the constituent parts of the dispenser 1
within the casing 10. The left casing half 10L and right casing
half 10R may be joined together by a mechanical means, including,
but not limited to, screws, or bolts and nuts. In one embodiment,
the left casing half 10L and right casing half 10R may each have
one or more posts 23 with orifice 24 (FIG. 15), so that when the
two parts are assembled together, they may be fastened as shown in
FIG. 2 using screws 25. The orifice 24 may preferably pierce the
outer surface of only one of the two halves. To give the dispenser
a smooth exterior, the left casing half 10L may have orifice 24
pierce the outer surface of the casing half and additionally have a
recess or countersink 26 at the surface to permit the screws 25 to
be driven inward enough to be inset or at least flush so as to not
outwardly protrude an interrupt the dispenser's smooth exterior.
The lower screw location may preferably be positioned in the base
peak 18. Base peak 18 may also include sculpting or inward relief
to expose the outer diameter of post 23 at that location, to permit
attachment of a lanyard 86 with a key ring 87 (FIGS. 8-8B).
[0057] The base 15 of the graspable handle portion 12 of casing 10
may have a circular opening 29, of sufficient size such that
canister 90 may be inserted therein. Base 15 may also incorporate a
latching cover 30 (FIGS. 10 and 14) that secures the canister
within the casing 10 by obstructing at least a portion of circular
opening 29. Latching cover 30 may have one or more male protrusions
31 that may be slidably received by, and also snap or clip into, a
female indentation 32 in the casing 10. Latching cover 30 may
alternatively be pivotally attached (not shown) to the casing
10.
[0058] The head portion 34 of the casing 10 may be comprised of a
front side 35, and top side 36. The front side 35 of head section
34 may have exposed, from the casing 10, a light 80 which may be a
shrouded bulb, or preferably may be a light emitting diode (LED). A
light 80 in the form of an LED provides desirable functionality for
dispenser 1, as it may be compact in size, because LEDs light up
quickly, and they may also be narrowly focused like a pointer. The
narrowly focused beam of the LED may be aligned with the exit path
of the nozzle assembly 50 to assist the user in accurately aiming
the chemical irritant spray.
[0059] Light 80 may have wires 81 that connect the light to a power
source. The power source may be one or more batteries 82. The light
80 may be illuminated and subsequently shut off through use of a
dedicated switch on the housing, or alternatively, the light may be
switched on or off through selective motion of the trigger button
70. In one embodiment, the light may be switched on by depressing
the trigger, and in another embodiment, the regular sliding
movement of the trigger, described hereinafter, may be used to
switch the light on and off. Also protruding from the front side 35
may be a cylindrical shield 37 that may serve to prevent errant
lateral discharge of chemical irritant from the nozzle assembly 50,
which is set back within the casing 10. Although errant discharge
is unlikely, and may be due to various small objects within the
user's pocket clogging or partially obstructing the nozzle 50, the
cylindrical shield 37 in combination with the exit of the nozzle 50
being recessed with the casing 10 additionally serves to reduce the
likelihood of such obstructions occurring.
[0060] The trigger button 70 may be formed and positioned within
casing 10 to have a portion protruding out from the top side 36 of
dispenser 1, so that it may be contacted and actuated by the user's
thumb. To assist the user in gripping the trigger button 70, the
exposed surface may have a plurality of raised arcuate protrusions
71 (FIG. 4); or in a second embodiment for dispenser 2, the
protrusion may be a partial race-track shape 72 (FIG. 21); or
lastly, in a third embodiment for dispenser 3, there may be a
plurality of rearward-cantilevered protrusions 73 (FIG. 29).
[0061] The trigger button 70 may be mounted within the dispenser 1
so as to be solely pivotable between each of its discrete
positions. However, in a first embodiment, the trigger button 70
may be slidable between a first position (FIG. 24) in which the
trigger cannot be actuated to discharge chemical irritant--a safe
position--and a second position (FIG. 25)--being an active or ready
position. Movement of the trigger button 70, as previously
mentioned, may switch on the LED light 80 when the trigger is moved
from the first position to the second position.
[0062] Trigger button 70 may be biased to normally remain in the
first (safe) position using a spring, which may be a helical
compression spring, or a torsion spring. This biasing would, among
other things, serve to prevent inadvertent movement of the button
and accidental discharge while the dispenser 1 is in the user's
pocket. Additionally, as a safety precaution to prevent inadvertent
movement of the trigger button 70 back to the first position at a
time when the user seeks to move the button from the second (ready)
position to a third position--an engaged position at which chemical
irritant is discharge--the button may be biased away from the first
position towards the second position. Biasing of the button toward
the second position and away from the first position may occur once
the button has been moved a measured amount. Therefore, the button
biasing direction may be selective based upon the trigger button's
position, such that biasing of the button into the first position
may transition to biasing of the trigger button into the second
position, once the button has moved at least part of the way toward
the second position.
[0063] In a preferred embodiment, the selective biasing may be
accomplished by a compression spring (not shown) that has one end
mounted to a post that is centrally located between the first and
second button positions, to thereby have the compression spring be
at its smallest effective length (greatest biasing force) when the
button is mid-way between the two positions. Such an arrangement
would produce position-based biasing as described.
[0064] In dispenser 1, a torsion spring 39 may have its helical
portion mounted to a post 42, with one of its straight ends 40
fixed against a wall of the casing 10 and the other straight end 41
being compressed to pre-load against a downward protruding lip 74
of trigger button 70 (FIGS. 15-16). Since the downward protruding
lip 74 of trigger button 70 is shown located to one side of the
button, and does not engage the torsion spring at a position
central to the first and second button positions, it would not, as
shown, provide the position-based biasing previously described.
However, to one skilled in the art, it is apparent that the
arrangement could be modified so that a torsion spring could also
achieve the position-based biasing, and may necessarily depend on
positioning of the undeflected straight end 41 of the spring to be
at the central location between the first and second positions; on
the distance of the trigger's throw in moving between the first and
second positions; and on the shape/length of a protruding feature
of the button that would be engaged by the spring, which must
necessarily be more extensive than downward protruding lip 74.
[0065] As stated above, the trigger button 70, when in the second
(ready) position with the LED light 80 illuminated and focused on a
target, may be moved to the third (engaged) position at which
chemical irritant would be discharged at an assailant. This
movement of the trigger button 70 to the third position may occur
with the user's thumb applying a downward force to the button. It
should be noted that the illuminated LED may thus also serve to
alert the user that the dispenser's trigger button 70 is active and
ready to be depressed.
[0066] Movement of the trigger button 70 from the second (ready)
position to the third (engaged) position may comprise translational
movement or pivotal movement, or a combination of such movements.
In a preferred embodiment, the trigger button 70 may pivot from the
second position to the third position and engage the nozzle
assembly 50. The trigger button 70 may preferably be biased from
the third position back to the second position, so that the
dispenser 1 ceases to discharge chemical irritant once the user no
longer applies the requisite amount of force needed to overcome
such biasing, so that a discharge will only occur through the
conscious effort of the user. Biasing from the third position back
to the second position may be achieved using a biasing means that
is independent from that which produces the selective biasing
between positions one and two, and may be through a spring means in
the form of a torsion spring, a coil spring, or a leaf spring. In a
preferred embodiment, leaf spring 88 (FIG. 23) maybe used.
Additionally, biasing may be derived from pressure in the canister
90 seeking to restore its poppet valve 91 to a closed position,
based on the following interactions.
[0067] The requisite depression or rotation of the trigger button
70 into the third position causes engagement with the nozzle
assembly 50, which in turn engages the poppet valve 91 of the
canister 90. A nozzle is a device that is designed to control the
direction and/or characteristics of a fluid flow as it traverses an
enclosed chamber or pipe via an orifice, and it typically varies in
cross sectional area to achieve such characteristic changes. Nozzle
assembly 50 accomplishes both functions. As seen in FIGS. 16-16B,
nozzle assembly 50 may comprise a nozzle housing 51, and a flow
adjusting nozzle insert 63. While the combined arrangement could be
manufactured as a single part, using such an assembly permits
easier and cheaper manufacturing, as each part has no internal
chamber and conversely has telescoping openings which may be bored
from a single direction. The assembly so configured also permits
changing of the nozzle insert 63 after assembly of the entire
dispenser 1, from the front side 35 of head portion 34.
[0068] The nozzle housing 51 may accomplish the direction change by
having a vertical housing portion 52 integrally connected to a
horizontal housing portion 58. The direction change may be
approximately 90 degrees to facilitate ease of discharge by a user,
but could also be at other angles to aid a shorter user who may
need to cause a discharge at a significantly taller assailant.
Vertical housing portion 52 may thus have a first bored opening 53
that is to a depth most of the way into the nozzle housing 51. A
second bored opening 54 may be of a greater diameter than bored
opening 53, and be to a lesser depth to produce shoulder 55.
Lastly, a third bored opening 56 may be of a greater diameter than
bored opening 54 and may also be to a lesser depth to produce the
telescoped opening in shown in FIG. 16A for the vertical housing
portion 52. Bored opening 56 may be made using a cutting tool to
produce the angled surface 57.
[0069] Similarly, the horizontal housing portion 58 may have a
relatively small first bored opening 59 that interconnects with
bored opening 53 of the vertical housing portion 52. A second bored
opening 60 in the horizontal housing portion 58 may be of a greater
diameter than bored opening 59, and to a lesser depth. Bored
opening 60 may also be made using a cutting tool to produce the
angled surface 61. Lastly, bored opening 62 may be of a greater
diameter than bored opening 60, and to a lesser depth to produce
shoulder 62A. The order of boring each of the openings for either
the horizontal housing portion 58 or the vertical housing portion
52 may, of course, be reversed.
[0070] The flow adjusting nozzle insert 63 may have an outer
surface 68 that corresponds to the opening 62 in nozzle housing 51,
and, in fact, need not be cylindrically shaped, but could be
rectangular. However, the simplest shapes to create and assemble
would entail having outer surface 68 to be a cylinder having a
diameter that is sized to accommodate an interference fit with
bored diameter 62, where installation may be done by a press-fit or
a cryogenic operation. Flow adjusting nozzle insert 63 may have an
exit bore 64 that is sized to produce the desired spray
characteristics. A second bored opening 65 may be of a greater
diameter and connect to bored opening 64 with a tapered surface 66.
Lastly, a countersink or flared opening 67 may enlarge bored
opening 65. The flared opening 67 may leave a face 69 of sufficient
area to bear upon shoulder 63 of the nozzle housing 51, when nozzle
insert 63 is inserted therein to create nozzle assembly 50, as seen
in FIG. 16.
[0071] The nozzle assembly 50 may be slidably mounted within casing
10 using several different means, including, but not limited to, a
cylindrical opening within the casing to receive the vertical
housing portion 52. Alternatively, the nozzle housing 51 may have
protruding flanges 49 that are slidably received by channel
features 46 within casing 10 (FIGS. 27 and 34). The nozzle assembly
50 may be permitted to translate vertically within a range of
motion necessary to activate the poppet valve of canister 90, once
engaged by the trigger button 70. The nozzle assembly 50 so
constructed may receive the spout of poppet valve 91 of the
canister 90 within the bored openings of the vertical housing
portion 52.
[0072] Canister 90 may be retained in the bored openings of the
vertical housing portion 52 without the poppet valve being engaged
by the shoulder 55, by having the canister top surface 92 (FIGS. 23
and 37) bear against a casing wall 44, and being held so positioned
by having the latch cover 30 engage the bottom surface 93 of the
canister 90. There should therefore be a small amount of vertical
play in the nozzle assembly from when the trigger button begins to
engage the nozzle assembly, and when the shoulder 55 of the nozzle
engages the poppet valve 91 of the canister 90.
[0073] Engagement by the shoulder 55 of the nozzle assembly 50,
with the poppet valve 91 of the canister 90 causes the release of
chemical irritant from the canister. The chemical irritant may then
proceed through the bored openings of nozzle assembly 50, resulting
in discharge of the irritant out from the nozzle insert 63. The
nozzle insert 63 may have the bored opening 64 adjusted in size to
deliver a wide and diffuse spray of chemical irritant, or
conversely it may be sized and shaped to prove a very narrow
discharge spray. The pocket pistol, in a preferred embodiment, may
be capable of accurately delivering a discharge that is
approximately in the range of 8 feet to 12 feet. The discharge may
be accurately delivered when used in combination with the focused
LED light 80, and maybe advantageous in a situation where a person
has no ability to retreat from an enclosed area and is clearly
threatened with imminent harm, but has not yet been physically
contacted by the assailant.
[0074] The chemical irritant may comprise an aerosol formula, where
the aerosol formula is comprised of a liquid concentrate and a
propellant. Such propellants are typically a gas. The liquid
concentrate may comprise a number of different active ingredients,
but in a preferred embodiment, the active ingredient of oleoresin
capsicum may be used.
[0075] Use of the active ingredient oleoresin capsicum may be
advantageous to cause startling and disabling effects upon an
assailant, including, but not limited to, a painful burning
sensation in the eyes of the target, and difficulty breathing which
creates a choking feeling. The active ingredient of oleoresin
capsicum is also advantageous in that is only produces temporary
effects, and cause no permanent harm.
[0076] In a fourth embodiment, FIGS. 34-36, the nozzle assembly 150
may have protruding flanges 149 which may be received in a
rectangular opening 146 in each of the two casing halves, 110L and
110R. The top of the rectangular opening 146A and the bottom 146B
may serve as stops for the flanges 149 to appropriately limit
travel of the nozzle assembly as previously described. The
cylindrical shield 137 may be mounted to the casing 110 by trapping
a flange 137A therein. Cylindrical shield 137 may have a race-track
shaped opening 137B to slidably receive the nozzle assembly 150 and
its translational motion. The trigger switch 170 may have mounting
protrusions 175 that that may be slidably received in slotted
openings 179 of leaf spring 176. The leaf spring 176 may bias the
depressed trigger switch 170 to its normal, un-depressed position
by having its mounting flange 178 nested within the casing (FIG.
35). When the trigger switch is slid away from the user, it may
switch on the light 160. In this embodiment, the trigger switch 170
may be depressed from either sliding position to have its flange
177 contact the top 150A of nozzle assembly 150. An electrical
contact 183 may be connected to the cylindrical periphery of
disk-shaped battery 182A, and may have a coiled connection means
183A protruding therefrom. A biased electrical contact 184 may
contact the flat side portion of disk-shaped battery 182B. A
secondary electrical contact 185 may also be included. The
electrical contacts may be installed within the casing 110 using
pins 189. Torsion spring 139 may also be pinned to the orifice in
post 142 using pin 189. The fourth embodiment may incorporate a
sliding member 165 beneath the leaf spring 176 that may have a
protruding contact flange 169 that may, when the trigger switch 170
is slid forward, force the secondary electrical contact 185 forward
to make contact with the coiled connection means 183A and close the
circuit to power the LED. The circuit may also include a resistor
197 or other electrical components as necessary. Sliding member 165
may also have a rectangular opening 167 to provide clearance with
the nozzle assembly 150 upon its installation. The leaf spring
skirt 165 may have a downward protruding flange 166 that may be
contacted by the torsion spring 139 to bias the trigger switch 170,
which is fixed to leaf spring skirt 165 by having openings 168
receive the trigger mounting protrusions 175.
[0077] The examples and descriptions provided merely illustrate a
preferred embodiment of the present invention. Those skilled in the
art and having the benefit of the present disclosure will
appreciate that further embodiments may be implemented with various
changes within the scope of the present invention. Other
modifications, substitutions, omissions and changes may be made in
the design, size, materials used or proportions, operating
conditions, assembly sequence; or arrangement or positioning of
elements and members of the preferred embodiment without departing
from the spirit of this invention.
* * * * *